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Meshroom

INTERMEDIATE
📖2 min read

Introduction​

Meshroom is a free, open-source 3D Reconstruction Software based on the AliceVision Photogrammetric Computer Vision framework. It allows you to run the whole photogrammetric pipeline from images to a textured mesh.

Official Website: https://alicevision.org/

Official Site

Visit the official AliceVision website for Meshroom documentation and downloads.

Main Content Section​

Content to be added.

Documentation for Methodology​

To ensure your work aligns with the Berkeley Protocol and the Guide for Judges, use the following points to document your use of Meshroom.

Methodology: How to document Meshroom

In Your Method Section​

Guidance: Describe the purpose, the tool version, and the input data.

  • Investigative Objective: To reconstruct a textured 3D mesh from a series of 2D photographs using the AliceVision pipeline.
  • Software Version: Meshroom [Version] (e.g., 2023.3.0).
  • Input Data: Derived from [Image Set Name] (Source Hash: [First 6 digits]).

In Your Decision Log​

Guidance: Record the specific procedural parameters and integrity checks.

  • Specific Settings: Feature Descriptor (SIFT/AKAZE), Dense Matching Estimator (Census/SGM), Meshing parameters.
  • Assumptions: Assumed the scene was static and contained sufficient texture for feature matching.
  • Integrity Check: Verified that analysis was performed on a working copy, not the original evidence file.
  • Date Performed: [YYYY-MM-DD].

Verification & Mitigation​

Guidance: How did you mitigate bias or verify accuracy?

  • Verification: Visually inspected the mesh for noise and holes; compared scale with known reference objects.
  • Bias Mitigation: Used default robust settings initially to establish a baseline before tweaking parameters for specific areas.

Common Limitations​

  • High computational cost and long processing times for large datasets.
  • Sensitive to changes in lighting and moving objects (e.g., trees in wind).

Example Methodology Statement​

"To reconstruct the incident site, Meshroom (v2023.3.0) was used to process [Number] images [Hash: J1K2L3]. The default AliceVision pipeline was used with SIFT feature extraction. The resulting mesh was scaled using a reference object of [X] meters, with a visual verification of geometry against site photos."